Paper-bag machine.



No. 853,918. PATENTED MAY 14, 1907. W. H. CLINE. PAPER BAG MACHINE.

APPLICATION FILED JAN.17, i907.

2 SHBBTS-SHEET l.

No. 853.918. PATENTED MAY 14, l907. W. H. CLINE.

PAPER BAG MACHINE.

APPLICATION FILED JAHJ'I. 1907.

'UNITED sTATns WATSON n. oiiiN'nnoF CLEVELAND, OHIO.

PAPER-BAG MACHINE.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed January 17.1907. Serial No. 352,682.

To nel]- wltom, it may concern.'

Be it known that I, W`ATsoN H. CLINE, a citizen of the Unitedl States,and a resident of Cleveland, county of Cuyahoga, State of Ohio, haveinvented certain new and useful Improvements in Paper-Bag Machines, ofwhich I hereby declare the following to be a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains to make and use the same. i

The invention relates to machinery for making paper bags and hasespecial reference to automatically acting mechanism for constructing asatchel end on what is known to the trade as a valve bag, and themachine is adapted to construct the satchel end upon bothL extremitiesof a bag tube, which may in addition to its use to forni a double endedbag be made long enough to cut transversely in two, in the middle andthus form two bags, each provided with a satchel bottom, but open at thetop, thus doubling the capacity and efficiency of the machine.

. The machine is designed to automatically form the Satchel or valveend, by first opening the free ends of the tube, spreading the freeedges and forming corners therein, flattening and gluing the spreadparts and inserting the cloth valve lining, and finally folding to acomplete shape while the bag tube is in continuous motion therethrougheach action being performed in its turn and relatively timed relativelyto the prior and succeeding movements.

The several operations required to form the satchel or valve extremitiesupon the bag tube are alike for each end and are simultaneously carriedon while the tube passes throughl the machine, hence a description ofthe mechanism required to form the Satchel and valve at one end of thetube will answer for a description of the mechanism required to form thesatchel .and valve at the other end thereof.

he bagtube after being cut to the re quired length to form a double'ended bag tube is fed by hand or by means of any suitable feedingdevice to the machine, and at each end is received between a pair ofendless aprons or bands from which the'ends project so that they can beacted upon by the Satchel and valve forming devices without checking themovement of the bag tube.

Each Satchel or valve end is formed upon the tube as follows: The tubeafter entering down.

between the endlessV bands, passes over a plate running the whole lengthof the machine, and the end is opened by means of suction obtained byair drawn through openings in the inclined walls of suction boxes, onebeing above and one below the tube, this suction draws apart the sidesof the bag mouth and permits of the spreading of the side edges of themouth by folding one edge back upon a second'thinplate underneath whichthe bag moves, and which extends for some distance at the inner side ofthe machine. plished by means of a reciprocating and spreading arm whichhas the action of the human hand and forearm and rst pushes the inneredge of the bag backward over the plate and then by a spreading movementfollowing the direction of movement of the tube in the machine folds thetwo sides flatly In the meantime angular formers are inserted into thecorners of the bag mouth at either end thereof, and perfect the shapethereof and are immediately withdrawn as the spreading and foldingmovement is accomplished. The bag end is then carried underneath sideguiding plates which hold the edges down until the folds are flattenedby means of a roller until they will keep their sha e, and are incondition for subsequent fol ing and gluing, and. forthe attachment of astrip of cloth, to form the valvel if the valve bag is desired. The bagend is then passed under sul table devices for feeding and attaching thestrip of cloth, for creasing the spread edges on the lines of the finalfolds, for final gluing and finally passes through devices for foldingthe spread sides over each other, on the creased lines, and a set ofrollers finish the flattening and cause the perfect adhesion of theparts by administering pressure thereto.

In this device all movements are obtained automatically from a centralsource of power and the various parts are manipulated by ico means ofvarious cam devices whereby the successive movements can be accuratelytimed.

A leading and important feature of the invention lies in the capacity ofthe machine to 1o 5 turn out perfect work in large quantities and alsoin its adjustability to enable it to manufacture several sizes of bags,and to manufacture a doubled number of bags having only one valve orSatchel end, for each bag. This 1 xo This spreading movement isaccomadjustability to provide double ended bags of varying length or toprovide bag tubes of double length which can be centrally cut in two, toform two bags from each bag tube, is obtained by separating or drawingtogether the separate sets of mechanism which ferm the duplicate ends onthe tube and stand in reversed position, and the supporting framestherefor are .independent and movable relatively toward and from eachother.

The invention is further described hereinafter, illustrated. in theaccompanying drawings and specifically pointed out in the claims'. v

In the accompanying drawings, Figure 1 is a side elevation of the deviceshowing the suction boxes, the gearing for adjusting the width ofmachine, the arrangement of the drawing gearsv7 cam movements andendless conveyers, and bag forming devices: Fig. 2 is a plan viewthereof showing the bag forming devices, pressure rolls, gluing rolls,cloth attaching roller, creasing roller and folding devices, with theaccompanying actuating gears therefor and gearing for adjusting thewidth of the machine to accommodate increased or diminished length ofbag tubes; Fig. 3 is a plan view of spreader arm and actuating crank.vFig. 4 is a longitudinal section thereof, showing' actuating gear,` Fig.5 is a plan view of one of the triangular blades which form the. endpockets of the bag mouth and rock arm therefor; Fig. 6 is a side view ofthe same., showing operating cam and link connection therefor@ Figs. 7and S are plan and side elevation respectiveljr of one of the suctionboxes; Fig. 9 is a transverse section thereof; Fig. 10 is a bottom viewthereof; Fig. 11 is a plan view of the glue pot and gluing rollers bymeans of which glue is applied to the spread edges of the bag tube;Figs. 12 and 13 are resp'-\.ctivei3T end view and bottom view of theglue applying roller; Fig. 14 is a plan view and Fig. 15 is a transversesection of glue applying device for fastening the cloth strip; Fig. 16is a plan view of the cloth storing and applying device; Fig. 17 is anend view of the same, and Fig. 18 is a bottom view thereof; Fig. 19 is aplan vie w of the folding plates for turning inward the spread sides ofthe bag tube, and Fig. 2O is an edge view thereof; Fig. 21 is aperspective view of one end of the bag tube showing the edges separatedprior to spreading them; Fig. 22 is a similar view showing the end ofthe tube spread and flattened and the position of the spreading arm andplate7 it also shows the positions of the angular blades which form thecorner pockets at the ends of the bag tube opening; Fig. 23 shows thespread mouth of the bag and the position of the glue to which the stripof cloth is attached; Fig. 24 shows the same with the cloth valve liningattached, and Fig. 25 shows the completed end.

In these views 1, 1 are pairs of endless bands passing over pulleys 2,2, pivoted at each end of the machine on horizontal shafts 3, 3. rlheseshafts may be driven in any suitable manner, and each pair of bands makecontact with each other during nearly half of their length and traveltogether through the length of the machine.

As shown supportingdrums or pulleys 4 are set in the frames 5 at regularintervals and are driven by means of bevel gears 5 and 6, upon throughshafts 7, at the sides of the machine. Each frame 5 is separate from theother andA the frames are relativelyT adjustable toward and from eachother by means of transverse screws S and connecting shaft S and gears 9and 10.

Upon each side frame is laid the longitudinal plate 11 upon which thebag tubes travel.

To the frames are secured the pairs of suction boxes 12 arrangedadjacent to the feeding ends of the bands, one above each bag tube andone below it, as illustrated in Figs. 7, 8, 9 and 10 and having theopposing faces made with perforations 13. These boxes connect with anexhaust tube 14, through which the air is drawn from the boxes andthrough the apertures 13, thus causing the sides of the bag tube toseparate as thepp between the boxes as shown at Fig. 21.

l5 is the spreading plate which is provided with the arm 16 havingtherein a slot 17 inl which is placed the fixed pin 1S, and a crank pin19 passing through the arm in conjunction with the pin 18 gives the arma reciprocating and swinging movement exactly rcsembling the movement ofthe human arm and hand when spreading out a sheet of paper on a table.This spreading plate engages the raised edge e of the bag tube andforces it back over a thin plate 20, so as to spread the edges of theopening. Themechanism for operating the crank pin is clearly shown inFigs. 3 and 4 and comprises gears 20 and 20-2.

Almost simultaneouslyT with the movement of the spreader, the triangularplates 2l enter the corners c of the ends of the bag mouth and pushingoutward from the center in both directions give a perfect andsymmetrical form to these ends of the opening. These triangular formingplates are mounted on rock arms 22 which are operated by means of links23 and cams 24 which are rotated by means of gears 25, from a commongear 26. Rock arms 27 support and direct the movements of the lower endsof the links. This position of the spreader and forming plates isillustrated in Fig. 22. These triangular plates are withdrawn as soon asthe spreader plate has accomplished its purpose and retired from thebag. The bag tubes are then drawn underneath the side guide plates 2Sand held down flat as the spreaded end passes underneath the fiatteningroller 29. Thence IOO IOS

the tubes pass underneath the glue pot 3Q and glue applying arm 31,which imprints a short strip of gluel g upon one corner as shown in Fig.24 to secure the cloth which lines the valve. This cloth is then appliedas shown at 32, Fig. 24, by means of a cloth feeding device shown inFigs. 16, 17 and 1S, where 33 is a drum or roller which incloses a rollof cloth 34. This cloth is drawn through the slot 35 by means of rollers36, actuated by gears 37 and star whe'el 38, which is engaged by pins 39upon the outside of the drum and stationary upon the fixed axle 40, thusunrolling the exact length of cloth required at each complete revolutionof the drum.

Cutler knives 41 and 42 adapted to register once in every revolution cutofi the cloth and the air passing through apertures 43 leading throughthe wall of the drum into an exhaust chamber 44, and to an exhaust pipe45, serves to suck up and hold the cloth upon the drum until it comesinto contact with the glue on the bag tube.

To the flattened tube the glue (by means ci' which the free ends arefinally secured) is applied by means of the glue pot 46 and. roller 47,provided with the impression flange 48, and this flange is made longeror shorter.

according to the requirement of the bag whether the satchel end is to beprovided with an open valve or not.

Il' no valve is required the cloth and cloth applying device are bothdispensed with.

60 is a creasing roll.

rlhe next action of the machine is to bend the sides of the flattenedend upon the creased lines by means of the upwardly curved edges 49 and50 of the plate on which the tube travels, one side being turned overbefore the other, and the glued side last. The end is then completed byrunning it between pressure rollers 51 which flatten and secure theparts together.

The various operating parts are designed to operate in perfect harmonyof succession of movements and relative timing thereof to providecontinuous movement of tube and of the parts acting thereon.

Many modifications of detail mechanism and connecting parts may beprovided to accomplish the various purposes of' the machine without inthe least departing from the spirit of the invention.

Having described the invention what I claim as new and desire to secureby Letters Patent is 1. In an automatic bag machine, organized toconstruct a satchel end upon each extremity of a paper bag tube, thecombination of, duplicate sets of conveying devices arranged side byside, Jfor engaging the tube in two places, duplicate devices foropening the ends of the tube, duplicate spreading and flattening devicesfor the free sides of the end openings, of the tube, duplicate sets JforJforming devices for-the corners of said openings, and duplicateflattening gluing and folding device, for completing said satchel ends,a common source of power operatively connected with the movements ofsaid sets of mechanism, a support for each set of conveying devices,'and each set of satchel end forming mechanism, and means for laterallymoving said supports to and from each other whereby the length of thebag tube to be operated upon can be increased or diminished,substantially as described.

2. In an automatic machine organized to form two satchel ends upon a bagtube, the combination of duplicate sets of instrumentalities forconveying the bag tube, for separating, spreading 'and forming the edgesof the open ends of the tube, and for flattening, gluing and folding andpressing the said ends to form the satchel ends supports for saidduplicate sets of instrumentalities, and means Jfor increasing ordiminishing the distance between said supports, to permit of varying thelength of the bag tube, substantially as described.

'3. In an automatic machine organized to form two satchel ends upon abag tube, the combination of duplicate sets of tube conveying devices,and satchel end forming devices, arranged parallel to each other,supports for said duplicate sets of devices, guides upon which one ofsaid su ports slides and means for adjusting the re ative distancebetween said supports to permit of varying the length of the tube,substantially as described.

4. ln an automatic machine organized to construct duplicate satchel endsupon a bag tube, the combination of duplicate sets of conveying devicesand duplicate sets of satchel end forming devices, a common source ofpower for b oth sets of devices, means for manipulating each deviceemployed informing said satchel ends, whereby said satchel ends areformed in a continuous manner when passing over the conveying devices,said manipulating means being operatively connected with said commonsource of power, a support for each of said duplicate set of conveyingdevices and satchel end forming devices, said supports being adjustablerelatively to each other, and adjusting means therefor, substantially asdescribed.

5. In an automatic machine for putting duplicate satchel ends upon avalve bag tube, the combination of duplicate sets of conveying devices,duplicate sets of separating, spreading and forming devices for the endsof` the bag tube, duplicate sets of pressure rolls, gluing devices,cloth valve attaching devices, folding devices and pressing devices, acommon source of power for said sets of devices, and manipulating meanstherefor operatively connected with said common source of power, each ofsaid sets of devices being adjustable to and from its du- IOC plate overwhich said side is folded back-' ward, and a plate upon which the end ofsaid tube travels, substantially as set forth.

7 In an automatic machine for putting Satchel end upon a bag tube,endless conveying bands between which said tube travels, the end of saidbag projecting therefrom,

suction devices at the feeding end of saidbands, whereby the' sides ofthe tube are separated, a plate upon which the end of the tube issupported, a second plate above said end of the tube, a spreader armadapted to engage one side of said tube mouth and to fold it back uponsaid second plate, said arm having a combined reciprocating and swingingmovement, triangular forming plates adapted to enter the corners of thebag mouth and shape the same while the spreader is acting and means forautomatically operating the said spreader arm and forming platesconjointly with the movements of the conveyors, substantially asdescribed.

8. In a machine for the purpose set forth, the combination with endlessconveyors between which a bag tube travels, the end of said tubeprojecting therefrom, of suction devices adapted to separate the freesides of the mouth of said tube to open the same, a piv oted spreaderarm having a combined reciprocating and swinging movement, and adaptedto bend back one side of said. mouth as it moves between said conveyers,an operating crank and shaft therefor, a plate extending the length ofthe machine on which the rojecting end of the tube lies, an upper p ateover which the bent side of the tube mouth is folded, rock arms providedwith angular plates adapted to enter the corners of'said tube mouth andshape the same while said spreader is acting, cam mechanism adapted tooperate said rock arm, a flattening roller for the spread tube mouth, amain source of power, and geared connections between said source ofpower, said cam mechanism, said crank shaft, and said endless conveyors,substantially as described,

9. In a spreading device for the purpose set forth, a slotted armprovided with a spreader plate at one end, a crank, a crank pin pivotedin said arm intermediate of said slot and plate, a fixed pivot pinadapted to enter said slot, and means for rotating said crank,substantially as described. A

10. In a combined spreading and forming device, for the open end of abag tube, in combination, upper and lower plates be* tween which the endof tube has longitudinal movement, a bed plate, a slotted arm having aterminal spreader plate thereon, a fixed pin in the bed plateenteringthe slot in said arm, a crank pin in said arm intermediate between saidslot and plate, a crank and crank shaft therefor, forming plates adaptedto enter the corners of said tube while the spreader is in operation andshape them to a triangular form, a rock arm for each forming plate, camoperated mechanism for operating said rock arms, a common source ofpower and geared connections between said common source of power andsaid crank, and cam mechanism, substantially as described.

In testimony whereof I hereunto set my hand this 29 day of December1906.

WVM. M. MONROE, C. 1I. OLDs.

